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Norbornadiene
About: Norbornadiene is a research topic. Over the lifetime, 2389 publications have been published within this topic receiving 38603 citations.
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TL;DR: Ruthenium-catalyzed cycloadditions of 2,3-disubstituted norbornadienes and 2,substitized norbornadiene with an alkyne were found to be highly chemo- and stereoselective with moderate level of regioselectivities and only small rate differences were observed with different substituents on the norbornadaene as discussed by the authors.
29 citations
TL;DR: In this article, the titanium-catalyzed reaction of norbornadiene and cyclooctadiene with decaborane was used to synthesize poly(6-(norbornenyl)decaborane) and poly(cyclooctenyldecabane) polymers with Mn > 30 kDa and polydispersities between 1.1 and 1.8.
29 citations
TL;DR: The use of cationic Rh(DuPHOS) precatalysts for asymmetric hydrogenation bearing NBD (norbornadiene) as counter ligand has significant advantages over the application of the related COD (cyclooctadiene), complexes as discussed by the authors.
29 citations
TL;DR: In this article, the tethering, stepwise procedure started with treatment of the MCM-41 mesoporous material with a toluene solution of the 1,4-diazobutadiene ligand, under reflux.
Abstract: [MX 2 (CO) 3 (DAB)] (M = Mo, W; X = I, Br) ( 5 – 8 ) complexes bearing the 1,4-diazobutadiene (DAB) ligand RN C(Ph) C(Ph) NR [R = (CH 2 ) 3 Si(OEt) 3 ] were immobilized in MCM-41 mesoporous silica. The tethering, stepwise procedure started with treatment of the MCM-41 mesoporous material with a toluene solution of the 1,4-diazobutadiene ligand, under reflux. The molybdenum and tungsten organometallic cores were subsequently introduced into the ligand-silicas by pore volume impregnation of a solution of the complexes [MX 2 (CO) 3 (NCMe) 2 ] (M = Mo, W; X = Br, I). The modified materials were extensively characterized by several techniques, such as FTIR, solid-state MAS and CP MAS NMR ( 13 C, 29 Si), powder XRD, and nitrogen adsorption–desorption measurements. These new materials (containing 2.6–2.9 wt.% Mo or 0.4–0.6 wt.% W) catalyze the ring-opening metathesis polymerization (ROMP) of norbornene (NBE) and norbornadiene at 328 K, in contrast with the very low activity exhibited by the precursor complexes and with their behavior at lower temperature. Addition of AlCl 3 as a co-catalyst enhanced the catalytic performance of the material MCM-DAB-MoBr 2 ( 12 ) in the ROMP of NBE.
29 citations
TL;DR: In this paper, the spectral properties of gaseous and polycrystalline norbornane [Ricyclo (2.2.1) heptane] and norbornadiene [bicycleclo 2,5-diene] were measured from 300 to 4000 cm −1.
29 citations